Don't want to beat the dead horse but isn't airtel's Telecom, not utility? or are they essentially same?Unipay - 4900, Setu- 5311, JioFin (no DC option available), Airtel -4900 on Utlity Bill Payments incl. CC.
Rest we can not guarantee even after knowing MCC because all are putting hidden MCC of 6969 to show middle finger to DC holders. But only SBI and HDFC Platinum card tell us because they are fastest with reward credit. Others take their time.